Configure 3º line as Last Resource option. Contingency connection

[Garroyo]

Hello All

Here is my question. Hope someone can help. First of all, my fortigate are F60E with 5.6.9 firmware.

1º. My HeadQuater firewall is a ADVPN with BGP and a provider with OSPF.

2º Remote Sites has also main VPN provider with BGP and  provider with OSPF

3º I like to install a third provider in the Remote Sites with BGP, and I like to use only this link in case that all other fails (at same time), I don't want this third provider as a backup of the Main VPN provider. In other words

[ul]

If OSPF provider fails, all will go through Main VPN provider (BGP routing). Third provider is NOT active

If Main provider fail, all will go through OSPF Provider. Third provider is NOT active

OSPF provider and Main VPN Provider (BGP) are down. Third provider become ACTIVE (BGP routing)[/ul]

I have tried to configure "link monitoring" but I only manage disable an interface is test fails...not to raise up an interface if test fails.

Best regards

Gonzalo